fix(nfc_kubernetes): adjust some tasks to run during checkmode

these tasks make no change and are required for checkmode to function as it's intended

!59 fixes #26

roles/nfc_kubernetes/tasks/helm/main.yaml

@@ -5,6 +5,7 @@
     url: https://baltocdn.com/helm/signing.asc
     dest: /usr/share/keyrings/helm.asc
     mode: 740
+  changed_when: not ansible_check_mode
   delay: 10
   retries: 3